Charlie Riedel / AP Jeffery Henry looks over “Verruckt,” the world’s tallest waterslide, at Schlitterbahn Waterpark in Kansas City, Kan., in 2014. Jeffery Henry looks over “Verruckt,” the world’s tallest waterslide, at Schlitterbahn Waterpark in Kansas City, Kan., in 2014. (Charlie Riedel / AP) John…
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